EP1650145B1 - Dispositif et méthode pour faire une perforation du papier - Google Patents

Dispositif et méthode pour faire une perforation du papier Download PDF

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Publication number
EP1650145B1
EP1650145B1 EP20050112584 EP05112584A EP1650145B1 EP 1650145 B1 EP1650145 B1 EP 1650145B1 EP 20050112584 EP20050112584 EP 20050112584 EP 05112584 A EP05112584 A EP 05112584A EP 1650145 B1 EP1650145 B1 EP 1650145B1
Authority
EP
European Patent Office
Prior art keywords
paper
transporting
punching
actuator
roller pair
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
EP20050112584
Other languages
German (de)
English (en)
Other versions
EP1650145A2 (fr
EP1650145A3 (fr
Inventor
Mikihiro Konica Minolta Bus. Tech. Inc. Yamakawa
Toshio Konica Minolta Bus. Tech. Inc. Shida
Teruhiko Konica Minolta Bus. Tech. Inc Toyoizumi
Masahiro Konica Minolta Bus. Tech. Inc. Kaneko
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Konica Minolta Inc
Original Assignee
Konica Minolta Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from JP2002359215A external-priority patent/JP4045943B2/ja
Priority claimed from JP2002366438A external-priority patent/JP4045948B2/ja
Priority claimed from JP2003004320A external-priority patent/JP4042568B2/ja
Priority claimed from JP2003081952A external-priority patent/JP2004284808A/ja
Application filed by Konica Minolta Inc filed Critical Konica Minolta Inc
Publication of EP1650145A2 publication Critical patent/EP1650145A2/fr
Publication of EP1650145A3 publication Critical patent/EP1650145A3/fr
Application granted granted Critical
Publication of EP1650145B1 publication Critical patent/EP1650145B1/fr
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H9/00—Registering, e.g. orientating, articles; Devices therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D5/00—Arrangements for operating and controlling machines or devices for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting
    • B26D5/20—Arrangements for operating and controlling machines or devices for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting with interrelated action between the cutting member and work feed
    • B26D5/30—Arrangements for operating and controlling machines or devices for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting with interrelated action between the cutting member and work feed having the cutting member controlled by scanning a record carrier
    • B26D5/32—Arrangements for operating and controlling machines or devices for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting with interrelated action between the cutting member and work feed having the cutting member controlled by scanning a record carrier with the record carrier formed by the work itself
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D7/00—Details of apparatus for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting
    • B26D7/01—Means for holding or positioning work
    • B26D7/015—Means for holding or positioning work for sheet material or piles of sheets
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26F—PERFORATING; PUNCHING; CUTTING-OUT; STAMPING-OUT; SEVERING BY MEANS OTHER THAN CUTTING
    • B26F1/00—Perforating; Punching; Cutting-out; Stamping-out; Apparatus therefor
    • B26F1/02—Perforating by punching, e.g. with relatively-reciprocating punch and bed
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H45/00—Folding thin material
    • B65H45/12—Folding articles or webs with application of pressure to define or form crease lines
    • B65H45/14—Buckling folders
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H5/00—Feeding articles separated from piles; Feeding articles to machines
    • B65H5/06—Feeding articles separated from piles; Feeding articles to machines by rollers or balls, e.g. between rollers
    • B65H5/062—Feeding articles separated from piles; Feeding articles to machines by rollers or balls, e.g. between rollers between rollers or balls
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H9/00—Registering, e.g. orientating, articles; Devices therefor
    • B65H9/06—Movable stops or gauges, e.g. rising and falling front stops
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H9/00—Registering, e.g. orientating, articles; Devices therefor
    • B65H9/10—Pusher and like movable registers; Pusher or gripper devices which move articles into registered position
    • B65H9/101—Pusher and like movable registers; Pusher or gripper devices which move articles into registered position acting on the edge of the article
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26F—PERFORATING; PUNCHING; CUTTING-OUT; STAMPING-OUT; SEVERING BY MEANS OTHER THAN CUTTING
    • B26F1/00—Perforating; Punching; Cutting-out; Stamping-out; Apparatus therefor
    • B26F1/0092—Perforating means specially adapted for printing machines
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2301/00—Handling processes for sheets or webs
    • B65H2301/30—Orientation, displacement, position of the handled material
    • B65H2301/36—Positioning; Changing position
    • B65H2301/362—Positioning; Changing position of stationary material
    • B65H2301/3621—Positioning; Changing position of stationary material perpendicularly to a first direction in which the material is already in registered position
    • B65H2301/36212—Positioning; Changing position of stationary material perpendicularly to a first direction in which the material is already in registered position centering, positioning material symmetrically relatively to said first direction
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2301/00—Handling processes for sheets or webs
    • B65H2301/50—Auxiliary process performed during handling process
    • B65H2301/51—Modifying a characteristic of handled material
    • B65H2301/515—Cutting handled material
    • B65H2301/5152—Cutting partially, e.g. perforating
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2404/00—Parts for transporting or guiding the handled material
    • B65H2404/10—Rollers
    • B65H2404/14—Roller pairs
    • B65H2404/144—Roller pairs with relative movement of the rollers to / from each other
    • B65H2404/1442—Tripping arrangements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2511/00—Dimensions; Position; Numbers; Identification; Occurrences
    • B65H2511/20—Location in space
    • B65H2511/22—Distance
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2511/00—Dimensions; Position; Numbers; Identification; Occurrences
    • B65H2511/40—Identification
    • B65H2511/414—Identification of mode of operation
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2511/00—Dimensions; Position; Numbers; Identification; Occurrences
    • B65H2511/50—Occurence
    • B65H2511/51—Presence
    • B65H2511/514—Particular portion of element
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2513/00—Dynamic entities; Timing aspects
    • B65H2513/40—Movement
    • B65H2513/41—Direction of movement
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2513/00—Dynamic entities; Timing aspects
    • B65H2513/50—Timing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2513/00—Dynamic entities; Timing aspects
    • B65H2513/50—Timing
    • B65H2513/51—Sequence of process
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2515/00—Physical entities not provided for in groups B65H2511/00 or B65H2513/00
    • B65H2515/30—Forces; Stresses
    • B65H2515/34—Pressure, e.g. fluid pressure
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2557/00—Means for control not provided for in groups B65H2551/00 - B65H2555/00
    • B65H2557/30—Control systems architecture or components, e.g. electronic or pneumatic modules; Details thereof
    • B65H2557/33—Control systems architecture or components, e.g. electronic or pneumatic modules; Details thereof for digital control, e.g. for generating, counting or comparing pulses
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2701/00—Handled material; Storage means
    • B65H2701/10—Handled articles or webs
    • B65H2701/13—Parts concerned of the handled material
    • B65H2701/131—Edges
    • B65H2701/1311—Edges leading edge
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T83/00—Cutting
    • Y10T83/202—With product handling means
    • Y10T83/2092—Means to move, guide, or permit free fall or flight of product
    • Y10T83/2196—Roller[s]
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T83/00—Cutting
    • Y10T83/444—Tool engages work during dwell of intermittent workfeed
    • Y10T83/4458—Work-sensing means to control work-moving or work-stopping means
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T83/00—Cutting
    • Y10T83/444—Tool engages work during dwell of intermittent workfeed
    • Y10T83/461—With abutment to position work being fed with respect to cutter
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T83/00—Cutting
    • Y10T83/647—With means to convey work relative to tool station
    • Y10T83/6572—With additional mans to engage work and orient it relative to tool station
    • Y10T83/6574—By work-stopping abutment
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T83/00—Cutting
    • Y10T83/647—With means to convey work relative to tool station
    • Y10T83/664—Roller
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T83/00—Cutting
    • Y10T83/748—With work immobilizer
    • Y10T83/7593—Work-stop abutment
    • Y10T83/764—Retractable

Definitions

  • the present invention relates to a paper post-processing device that drills holes for filing with a punch at prescribed positions on the transported paper, an image forming system in which the post-processing devices are connected and to a method to punch holes on papers.
  • a paper post-processing device that drills holes for filing with a punch at prescribed positions on the transported paper
  • an image forming system in which the post-processing devices are connected
  • a method to punch holes on papers is known from US-B1-6 361 036 .
  • paper post-processing devices each conducting post-processing such as punching processing and fold processing on a paper on which an image is recorded by an image forming apparatus such as a copying machine, a printer, a facsimile machine and that conducts folding processing such as z fold, outside three fold, inside three fold, double parallel fold, inside four fold, outside center fold and inside center fold for papers of paper ejected from image forming apparatuses such as an electrophotographic copying machine, a printer, a facsimile machine and a multifunctional machine having various functions of the aforesaid machines, and in particular, to space saving for a paper fold processing section that is composed of a pair of folding rollers and to reduction of driving loads for opening/closing of the paired folding rollers.
  • the paper post-processing device disclosed in TOKKAIHEI No. 10-148983 is composed of a pair of upstream fold-transporting rollers in a paper transportation path, a pair of downstream fold-transporting rollers and a pair of folding rollers, and it double folds a paper.
  • Z fold processing for one paper is conducted in the first post-processing section, and center fold processing for plural papers and fold processing such as inside three fold and center fold for one paper are conducted in the second post-processing section arranged at the downstream side of a binding processing section.
  • Patent Document 3 Patent Document 3
  • post-processing devices each conducting punching processing automatically for papers, for filing papers on each of which an image is formed by an image forming apparatus such as an electrophotographic copying machine, a printer, a facsimile machine or a multifunctional machine having the functions of the aforesaid machines. Owing to this, it is possible for an operator to save time for binding outputted papers to set them on a business punch and for positioning them to punch as in the past, which has resulted in an office work that is extremely efficient.
  • Patent Document 4 discloses a paper admitting device wherein, when a trailing edge of a paper passes through the first transporting roller, a relative difference of transporting speed is given to the first transporting roller and the second transporting roller to curve the paper between both rollers and to make the trailing edge of the paper to touch the first transporting roller for determining a punched hole position.
  • the invention has been achieved in view of the problems mentioned above, and its another object is to provide a post-processing device wherein a structure is simple, papers are aligned so that positional deviations of the papers both in the transport direction and in the lateral direction may not be caused, and thereby, dispersion of punched hole positions is eliminated so that papers may not be unbecoming when they are filed, an image forming system to which the post-processing device is connected, and a paper punching method.
  • FIG. 6 (a) - 6 (c) is a plan view showing an example of a type of the paper punched by a punching means.
  • charging means 402 imagewise exposure means 403, developing means 404, transfer means 405A, neutralizing means 405B, separating claw 405C and cleaning means 406 around rotary image carrier 401, and exposure scanning based on image data obtained from a document through reading by a laser beam of the imagewise exposure means 403 is conducted to form a latent image, after uniform charging is performed on a surface of the image carrier 401 by the charging means 402, and the latent image is subjected to reversal development by the developing means 404 to form a toner image on a surface of the image carrier 401.
  • an image writing means in features of the invention corresponds to the imagewise exposure means 403, while, an image forming means corresponds to the charging means 402, developing means 404 and transfer means 405A.
  • image recording paper (hereinafter referred to as a paper) S that is fed from paper feeding means 407 is transported to the transfer position where the toner image is transferred onto the paper S by the transfer means 405A.
  • charges on the reverse side of the paper S are neutralized by the neutralizing means 405B, and the paper S is separated from the image carrier 1 by the separating claw 405C to be transported by intermediate transport section 407B, and is heated and fixed by fixing means 408 to be ejected by paper ejection roller 407C.
  • transport path changeover plate 407D is switched to the state shown with dotted lines.
  • developing agents remaining on the surface of the image carrier 401 is removed by the cleaning means 406 at the downstream side of the separating claw 405C, to be ready for the succeeding image forming.
  • transport path changeover plate 407D is switched to the condition shown with solid lines so that paper S heated and fixed by the fixing means 408 is transported downward, and is reversed inside out on a switchback basis in reversing transport means 407E, and then, a new toner image is transferred on a reverse side at the transfer position.
  • the paper is heated and fixed in the same process as in the foregoing, and is ejected out by the paper ejection roller 407C after passing through the transport path changeover plate 407D that is switched to the condition shown with broken lines.
  • transport path changeover plate 407D is switched to the condition shown with solid lines so that paper S heated and fixed by the fixing means 408 is transported downward, and is reversed inside out on a switchback basis in reversing transport means 407E, and is ejected out by the paper ejection roller 407C.
  • the paper S ejected by the paper ejection roller 407C is fed into post-processing device 400FS.
  • operation section 409 that selects an image forming mode or a paper post-processing mode to establish it
  • image reading device 400B equipped with an automatic document feeding device of a moving document reading type
  • first paper feeding tray 420A, second paper feeding tray 420B and stationary paper feeding tray 491 are arranged on the upper deck in the drawing, punching means 430, shifting means 450 and paper ejecting means 460 are arranged in series on the same plane which is substantially horizontal, on the intermediate deck, and binding means 470 and folding means 480 are arranged in series on the same plane that is inclined, on the lower deck.
  • elevating paper ejection tray 492 on which shifted papers S and bound paper bundles are stacked to be elevated or lowered and stationary paper ejection tray 493 on which paper bundles that have been subjected to three fold or two fold are stacked.
  • paper S ejected from the paper ejection roller 407C of the image forming apparatus 400A is introduced into inlet roller 411 of post-processing device FS.
  • the inlet roller 411 is arranged to agree with the paper ejection roller 407C of the image forming apparatus 400A in terms of a position.
  • punching means 430 On the downstream side of the inlet roller 411 in the transport direction for papers, there is arranged punching means 430, and two to four holes for filing are punched at prescribed positions for each of paper 400S, an inserting paper and a paper for a cover which are transported.
  • punching processing by the punching means 430 is the cardinal point of the invention, it will be described in detail separately. Paper S and others which have been subjected to punching processing are transported by transporting rollers 412, 413 and 414 and arrive at a pair of changeover gates 400G.
  • Changeover gates 400G is branched selectively through driving of an unillustrated solenoid to either one of paper transport paths in three directions including the first transport path F401 leading to stationary paper ejecting tray 491, the second transport path F402 leading to shifting means 450 and the third transport path F403 leading to binding means 470.
  • the changeover gate 400G opens only the first transport path F401, and closes the second transport path F402 and the third transport path F403. Then, the paper S passes through the first transport path F401 to ascend and is stacked successively on stationary paper ejection tray 491.
  • the changeover gate 400G opens only the second transport path F402, and closes the first transport path F401 and the third transport path F403. Then, the paper S passes through the second transport path F402 and is shifted by shifting means 450 in the direction perpendicular to the paper transport direction.
  • the shifting means 450 conducts shift processing wherein a paper ejection position for paper S is changed every prescribed number of papers in the lateral direction for paper transport. Shifted papers S are ejected on elevating paper ejection tray 492 to be stacked thereon in succession.
  • the changeover gate 400G opens only the third transport path F403, and closes the first transport path F401 and the second transport path F402. Then, the paper S passes through the third transport path F403, and the leading edge portion of the paper S hits and is stopped in the vicinity of a interposing position of a pair of inlet transport rollers (registration rollers) 471 so that leading edges of papers are trued up.
  • the paper S After the trailing edge of paper S in its advancing direction is ejected from the interposing position of the paired inlet transport rollers, the paper S is lifted upward along paper stacking tray 472 by inertial force, and then, is changed by its own weight to descending to slide and descend on an inclined surface of the paper stacking tray 472, and stops.
  • binding means 470 drives in one or two staples at one location or two locations in the vicinity of a side edge of a paper bundle, for binding processing.
  • the bound paper bundle slides on a bottom surface of the paper stacking tray 472, and is pushed upward obliquely and is ejected and stacked on elevating paper ejection tray 492.
  • Fig. 2 is a side view of primary portions in a punching processing mechanism
  • Fig. 3 is a top view of primary portions in a punching processing mechanism.
  • inlet roller 411, transporting rollers 412 and 413 and punching means 430 are the same as those shown in Fig. 1 .
  • Inlet roller 411, transporting rollers 412 and 413 are composed respectively of driving rollers 411a, 412a and 413a and respectively of driven rollers 411b, 412b and 413b, and the driving rollers 411a, 412a and 413a are driven by an unillustrated motor.
  • upper guide plate 431 and lower guide plate 432 are arranged so that paper S may be guided and transported surely by transporting rollers 412 and 413.
  • Helical torsion spring 433 is engaged with spring holding section 431a provided on upper guide plate 431, and one end of the helical torsion spring 433 presses supporting shafts 412c and 413c respectively of driven rollers 412b and 413b. Therefore, the driven rollers 412b and 413b are in pressure contact with the driving rollers 412a and 413a. Further, the driven rollers 412b and 413b are constructed to be released from pressure contact with the driving rollers 412a and 413a and to be capable of moving upward, and guide section 431b that guides supporting shafts 412c and 413c is provided on upper guide plate 431.
  • an urging member in features of the invention corresponds to the helical torsion spring 433, but the urging member is not always limited to the helical torsion spring, and it may also be helical spring or a leaf spring for tension or compression.
  • an urging member of any type can be employed if it can urge in the direction to bring driven rollers 412b and 413b into pressure contact respectively with driving rollers 412a and 413a.
  • crank lever 435 is provided between each solenoid 434 and each of the driven rollers 412b and 413b.
  • One end of the crank lever 435 is engaged with plunger 434a of each solenoid 434 and the other end of the crank lever 435 is constructed to be capable of pushing up each of supporting shafts 412c and 413c respectively of driven rollers 412b and 413b by touching a bottom of each supporting shaft.
  • width-regulating plates 441 and 442 which press end portions on both sides of paper S transported to the position of each of the transporting rollers 412 and 413 toward the center of the paper in the direction in a width of the paper that is perpendicular to the paper transport direction, to eliminate lack of uniformity of papers.
  • the width-regulating plates 441 and 442 are supported respectively by supporting shafts 444 and 445 and can be moved in the paper width direction and in opposite directions each other by belt 443 driven by an unillustrated stepping motor.
  • Punch 430a that punches holes for filing on paper S is provided on punching means 430, and a plurality of stopper members 448 are provided at the upstream side of the punch 430a in the paper transport direction.
  • the stopper members 448 are freely rotated by an unillustrated stepping motor on supporting shaft 449, and when the paper S is made to pass through the punching means 430 from the upstream side in the paper transport direction as described later, the stopper members 448 are retreated from transport path 430b for paper S, while, when the paper S is transported to the punching means 430 from the downstream side in the paper transport direction, the stopper members 448 are inserted in the transport path 430b to be hit by the trailing edge of the paper S.
  • an actuator that drives the stopper members 448 is not limited to a stepping motor, and a structure wherein a stopper member is inserted in or taken out of the transport path 430b may also be employed.
  • paper 400S ejected from paper ejection roller 407C of image forming apparatus 400A is fed in inlet roller 411 of post-processing device 400FS, and then is transported to the punching means 430 by the inlet roller 411.
  • the stopper members 448 are retreated from transport path 430b of the punching means 430, and the papers passes through the transport path 430b as it is.
  • a leading edge portion of the paper S is transported by transporting rollers 412 to a space between upper guide plate 431 and lower guide plate 432, and when sensor 447 detects a trailing edge portion of the paper S, a timer of an unillustrated control means operates to stop rotations of transporting rollers 412 and 413 after a prescribed period of time.
  • the paper S is nipped by the transporting rollers 412 and 413, and width-regulating plates 441 and 442 are located at positions which are slightly outside the end portions on both sides of the paper S to be away from them. This condition is shown in Fig. 2 .
  • solenoids 434 are turned off. Then, plungers 434a project, and one end of crank lever 435 retreats from the lower portion of each of the supporting shafts 412c and 413c respectively of the driven rollers 412b and 413b. Thereby, the driven rollers 412b and 413b are brought into pressure contact respectively with the driving rollers 412a and 413a again by the urging force of helical torsion spring 433. Namely, the paper S is nipped again by rollers to return to the condition shown in Fig. 2 .
  • a motor that drives driving rollers 412a and 413a is rotated reversely.
  • the paper S is transported reversely to the upstream side in the paper transport direction by reverse rotations of the driving rollers 412a and 413a.
  • stopper members 448 are rotated counterclockwise by about 90°, and are inserted in transport path 430b for paper S, thus, the trailing edge of the paper S transported in the reverse direction hits the stopper member 448.
  • This condition is shown in Fig. 5 .
  • the timer starts checking time after the reverse rotation of the motor is started, and the reverse rotation of the motor is stopped after the lapse of time for the trailing edge portion of the paper S to hit firmly the stopper member 448.
  • an end portion of each of the upper guide plate 431 and the lower guide plate 432 at the upstream side in the paper transport direction is formed to be tilted outward so that paper S may be buckled in a space between punching means 430 and the aforesaid end portion, as shown in Fig. 5 .
  • paper S is regulated in terms of its width, and its trailing edge hits the stopper member 448 to be regulated to be trued up also in the transport direction, thus, punching means 430 is driven so that the prescribed number of holes are punched on the paper S by punch 430a.
  • Figs. 6 (a) - 6 (c) are plan views showing various types of papers each being punched by a punching means.
  • Fig. 6 (a) shows an example (filing with two holes) wherein two holes h are punched in the vicinity of the trailing edge portion d of paper S
  • Fig. 6 (b) shows an example (filing with three holes) wherein three holes h are punched in the vicinity of the trailing edge portion d of paper S
  • Fig. 6 (c) shows an example (filing with four holes) wherein four holes h are punched in the vicinity of the trailing edge portion d of paper S.
  • Intervals of these plural holes h are standardized as shown with illustrated dimensions. Distance between a hole and a paper edge e that covers from the trailing edge portion d of paper S to hole h can be established freely, but it is generally in a range of 9 - 11 mm.
  • control means operates a timer to conduct at prescribed intervals a series of controls wherein rotations of transporting rollers 412 and 413 by a motor are stopped after the trailing edge of paper S is detected by sensor 447, solenoid 434 is turned on to make a stepping motor to rotate belt 443 to move width-regulating plates 441 and 442, solenoid 434 is turned off to make transporting rollers 412 and 413 to rotate reversely, stopper member 448 is rotated by a stepping motor, and reverse rotations of transporting rollers 412 and 413 are stopped to drive punching means 430.
  • the operation to rotate the stopper member 448 with a stepping motor can be conducted at any time, if the operation is conducted after the trailing edge portion of paper S is transported to the downstream side of the position of transport path 430b where the stopper member 448 is to be inserted in the paper transport direction.
  • control means may either be provided on image forming apparatus A or be provided on post-processing device FS.
  • driving rollers 412a and 413a are rotated reversely to transport paper S in the opposite direction so that the trailing edge portion of paper S may hit the stopper member 448 in the structure explained above, it is not always necessary to transport paper S in the opposite direction. Namely, it is also possible to employ the structure wherein transport of paper S is stopped under the condition that the trailing edge portion of paper S is still positioned in transport path 30b even if the leading edge portion of paper S has passed through the transport path 439b of punching means 430, and then, the width regulations as those described above are conducted, and under the condition that the paper S is nipped again between transporting rollers 412 and 413 and is stopped, the stopper member 448 is rotated to be brought into contact with the trailing edge portion of the paper S.
  • crank lever 435 is not limited to the solenoid, and the crank lever 435 may also be rotated by a stepping motor.
  • a member driven by the stepping motor may also be one in another shape without being the crank lever, naturally, and in a word, any construction may be employed, provided that pressure contact of driven rollers 412b and 413b respectively with driving rollers 412a and 413a can be canceled by a prescribed actuator.
  • the post-processing device of the invention exhibits the following effects.
  • a post-processing device, an image forming system and a paper punching method in the invention make it possible to regulate papers so that the papers are not deviated both in the paper transport direction and the lateral direction under the simple structure, and to eliminate dispersion of positions of punched holes to avoid indecency in filing, which is an effect of the invention.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Forests & Forestry (AREA)
  • Folding Of Thin Sheet-Like Materials, Special Discharging Devices, And Others (AREA)

Claims (10)

  1. Dispositif (400FS) de post-traitement de papier pour perforer un papier afin de faire un trou pour le classement, comprenant :
    une unité (430) de perforation ;
    une paire (412, 413) de rouleaux de transport pour pincer et transporter le papier comprenant un rouleau (412a, 413a) d'entraînement et un rouleau (412b, 413b) entraîné, disposée en aval de l'unité (430) de perforation dans un sens de transport du papier,
    un élément (433) de sollicitation pour solliciter le rouleau (412b, 413b) entraîné afin qu'il vienne en contact par pression avec le rouleau (412a, 413a) d'entraînement,
    un actionneur (434, 435) pour libérer le rouleau (412b, 413b) entraîné du contact par pression avec le rouleau (412a, 413a) d'entraînement à l'encontre de la force de sollicitation de l'élément (433) de sollicitation, lorsque l'actionneur est mis sous tension, caractérisé en ce que le dispositif comprend en outre :
    une unité (441, 442) d'alignement du papier latéralement dans le sens d'une largeur du papier perpendiculaire au sens de transport du papier, et
    un élément (448) formant butée disposé en amont de l'unité (430) de perforation dans le sens de transport du papier, et l'élément (448) formant butée peut être inséré dans un chemin de transport du papier ou retiré de ce chemin de transport du papier, dans lequel
    (i) la paire (412, 413) de rouleaux de transport est conçue pour pincer et transporter le papier dans l'état dans lequel l'élément (448) formant butée est retiré du chemin de transport du papier, puis
    (ii) l'actionneur (434, 435) peut être mis sous tension pour supprimer le pincement du papier par la paire de rouleaux de transport après qu'au moins la partie de bord d'attaque du papier soit passée par l'unité (430) de perforation,
    (iii) l'unité d'alignement est conçue pour aligner le papier latéralement,
    (iv) l'alimentation électrique de l'actionneur (434, 435) peut être arrêtée afin que la paire (412, 413) de rouleaux de transport pince à nouveau le papier, et
    (v) l'unité (430) de perforation est conçue pour perforer le papier, après que l'élément (448) formant butée inséré dans le chemin de transport du papier a heurté un bord arrière du papier.
  2. Dispositif de post-traitement de papier selon la revendication 1, dans lequel, après que l'alimentation électrique de l'actionneur (434, 435) a été arrêtée, la paire (412, 413) de rouleaux de transport pince le papier et tourne en sens inverse pour transporter le papier dans le sens inverse, de façon que le bord arrière du papier heurte l'élément (448) formant butée.
  3. Dispositif de post-traitement de papier selon la revendication 1 ou 2, comprenant en outre un rouleau (411) d'entrée pour introduire le papier, qui est placé en amont de l'unité (430) de perforation dans le sens de transport du papier, dans l'unité (430) de perforation.
  4. Dispositif de post-traitement de papier selon l'une quelconque des revendications 1 à 3, dans lequel l'actionneur (434, 435) est un actionneur à électro-aimant de commande.
  5. Dispositif de post-traitement de papier selon l'une quelconque des revendications 1 à 4, dans lequel il est prévu deux jeux de paire (412, 413) de rouleaux de transport et l'actionneur (434, 435).
  6. Système de formation d'image comprenant :
    une section (400A) de formation d'image pour enregistrer une image sur un papier ;
    une section de transport de papier pour transporter le papier ;
    une section (400FS) de post-traitement de papier selon l'une quelconque des revendications 1 à 5 pour perforer le papier ; et
    un dispositif de commande pour commander le système de formation d'image.
  7. Procédé de perforation de papier pour perforer un papier en utilisant une unité (430) de perforation pour faire un trou pour le classement dans une position prescrite sur le papier transporté, comprenant :
    le pincement et le transport du papier au moyen d'une paire (412, 413) de rouleaux de transport disposée en aval de l'unité (430) de perforation dans un sens de transport du papier de sorte qu'au moins un bord d'attaque du papier passe par l'unité (430) de perforation ;
    la suppression du pincement du papier par la paire (412, 413) de rouleaux de transport en mettant sous tension un actionneur (434, 435) ;
    l'alignement du papier latéralement au moyen d'une unité (441, 442) d'alignement dans le sens de la largeur du papier perpendiculaire au sens de transport du papier ;
    le pincement à nouveau du papier au moyen de la paire (412, 413) de rouleaux de transport en arrêtant l'alimentation électrique de l'actionneur (434, 435) ;
    l'insertion d'un élément (448) formant butée disposé en amont de l'unité (430) de perforation dans le sens de transport du papier dans le chemin de transport du papier ;
    le fait qu'un bord arrière du papier vienne heurter l'élément (448) formant butée ; et
    la perforation du papier par l'unité (430) de perforation.
  8. Procédé de perforation de papier selon la revendication 7, dans lequel, après l'étape consistant à pincer à nouveau le papier au moyen de la paire (412, 413) de rouleaux de transport en arrêtant l'alimentation électrique de l'actionneur (434, 435), la paire (412, 413) de rouleaux de transport pince le papier et tourne en sens inverse pour transporter le papier dans le sens inverse de façon que le bord arrière du papier heurte l'élément (448) formant butée.
  9. Procédé de perforation de papier selon la revendication 7 ou 8, dans lequel l'élément (448) formant butée est retiré du chemin de transport du papier pendant l'étape consistant à pincer et transporter le papier au moyen de la paire (412, 413) de rouleaux de transport afin qu'au moins un bord d'attaque du papier passe par l'unité (430) de perforation.
  10. Procédé de perforation de papier selon l'une quelconque des revendications 7 à 9, dans lequel l'actionneur (434, 435) est un actionneur à électro-aimant de commande .
EP20050112584 2002-12-11 2003-12-08 Dispositif et méthode pour faire une perforation du papier Expired - Fee Related EP1650145B1 (fr)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
JP2002359215A JP4045943B2 (ja) 2002-12-11 2002-12-11 用紙後処理装置
JP2002366438A JP4045948B2 (ja) 2002-12-18 2002-12-18 用紙後処理装置を備える画像記録装置
JP2003004320A JP4042568B2 (ja) 2003-01-10 2003-01-10 後処理装置、画像形成システム、及び用紙穿孔方法
JP2003081952A JP2004284808A (ja) 2003-03-25 2003-03-25 用紙後処理装置
EP20030028175 EP1428782B1 (fr) 2002-12-11 2003-12-08 Dispositif de pliage de papier et dispositif d'enregistrement d'images contenant celui-là

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EP1650145A2 EP1650145A2 (fr) 2006-04-26
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EP20030028175 Expired - Fee Related EP1428782B1 (fr) 2002-12-11 2003-12-08 Dispositif de pliage de papier et dispositif d'enregistrement d'images contenant celui-là

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DE60309657D1 (de) 2006-12-28
DE60321240D1 (de) 2008-07-03
US20040120745A1 (en) 2004-06-24
EP1650145A2 (fr) 2006-04-26
EP1428782A3 (fr) 2004-07-28
US6895212B2 (en) 2005-05-17
DE60309657T2 (de) 2007-09-13
US7333767B2 (en) 2008-02-19
US20050159287A1 (en) 2005-07-21
EP1428782B1 (fr) 2006-11-15
EP1428782A2 (fr) 2004-06-16
EP1650145A3 (fr) 2007-08-22

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